Transactions

MVP

• Send open orders based on price in ordered set in rethinkDB as each value is an array consisting of order objects X
• Fulfill existing open orders with new orders that match transaction criteria X
• Allow for partial order transactions to be fulfilled X
• When an order is fulfilled, new closed transaction records are created for that order X

Post-MVP

• Check balance before transaction (UserID and currency type) X
• Check if the order is market or limit. Buy or sell.
• Merge openBuy and openSell into openOrders X
• Check available/actual balance and update appropriately X
• Add exchange rates based on market value X
• Make sure transactions happen cross-currency and never on the same currency (i.e. BTC:BTC) X
• Add userID and currency in each transaction X
• Merge HistSell and HistBuy into TransactionHistory X
• Write tests for scaling X
• Need a cancel function
• Need a more efficient sorting for the openOrders for constant time

Edge Cases